WIRED Space Photo of the Day: Space Sperm or Cosmic Caterpillar?: This light-year-long knot of interstellar ga… http://t.co/kCnCYCvi8Z

by Freeman Lowell

WIRED Space Photo of the Day: Space Sperm or Cosmic Caterpillar?: This light-year-long knot of interstellar ga… http://t.co/kCnCYCvi8Z:

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